Hell, why do so many of us still breakdance? Why do so many of us still beatbox? The two most successful rappers to come out of Chicago, Common Sense and The Brat, had nothing to do with the city-wide hip-hop scene.

Before you knew it, everyone, everywhere, was trying to copy Fresh's technique, and every rapper on the planet seemed intent on proving they could beatbox (with varying, occasionally embarrassing degrees of success).

2005, Derek Beres, Global Beat Fusion: The History of the Future of Music (ISBN 0595348998), iUniverse, page 102:

Turull, group elder, and Wright, the youngest, play off each other extraordinarily well, be it on cajon or when the latter jumps up to beatbox against Marina’s lyrical sidesteps.